摘要：Projects to restore ecosystems have been conducted in various regions. To assess the effects of these projects, studies have been launched to predict changes in ecosystems by constructing mathematical models to reproduce target ecosystems and performing computer simulations. When an entire ecosystem including many species is the target, models using differential equations are often used to calculate population dynamics of the species constituting the ecosystem. When interactions among species are reproduced, the types of interactions are determined based on previous studies and experts’ opinions. Since it often happens that the strength of interactions cannot be measured, multiple models with randomly determined strengths of interactions are prepared to perform simulations to select a model that satisfies the requirements. After that, simulations of eradication of invasive species are performed to predict the outcome. This is the general procedure. A plurality of simulations has predicted that if there are multiple invasive species, eradicating these species simultaneously will be effective for restoring the ecosystem efficiently. However, since simultaneous eradication has a larger impact on ecosystems, monitoring must continue even after eradication and appropriate measures taken. Furthermore, since the models are still in the course of development, a framework is required to feed data obtained from monitoring into the models to improve them further.
